IPhone 5s was Apple’s first smartphone with touch ID fingerprint home button and a 64-bit processor when it launched in 2013. It was also the last new IOS phone to feature a smaller 4-inch screen, at least until iphone SE came out in 2016. iOS 7 adds sone nice step-ups, too, including Airdrop file transfers .It came in variants of 16 gb, 32gb, 64gb .It has camera of 8mp sensor . The 5S has a 5.92 Wh battery which is built-in and non-removable. Apple says the iphone 5s will last for up to 250 hours on standby and 10 hours on talk time .